1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index 1ec217433b4c..474a4e3438db 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -908,8 +908,9 @@ static irqreturn_t b44_interrupt(int irq, void *dev_id)
         istat = br32(bp, B44_ISTAT);
         imask = br32(bp, B44_IMASK);
 
-        /* ??? What the fuck is the purpose of the interrupt mask
-         * ??? register if we have to mask it out by hand anyways?
+        /* The interrupt mask register controls which interrupt bits
+         * will actually raise an interrupt to the CPU when set by hw/firmware,
+         * but doesn't mask off the bits.
          */
         istat &= imask;
         if (istat) {